Means for balancing centrifugal bowls.



J. POHL.

MEANS FOR BALANCING OBNTRIFUGAL BOWLS.

APPLICATION PILBD'JAN. 1a, 1910.

989,043. Patented Apr. 11, 1911 2 BHEETS8HEET 1.

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J. POHL.

MEANS FOR BALANCING CENTRIFUGAL BOWLS.

APPLIOTION FILED JAN-18. 1910.

989,043. Patented Apr. 11,1911.

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JOHN POI-IL, F BLOOMFIELD, NEW JERSEY.

MEANS FOR BALANCING CENTRIFUGAL BOWLS.

Specification of Letters Patent.

at0llt0(l Apr. 1.1, 1911.

Application filed January 18, 1910. Serial No. 538,667.

fl '0 all whom it may concern: I

lie it known that. l, JOHN Form. a subject of the Czar of Russia,residing at Bloomfield, in the county of Essex and State of New Jersey,have invented certain Improvements in Means for Balancing CentrifugalBowls, of which the following is a specification.

This invention relates to the art of balancing bodies or members whichin use are rate of ten or twelve thousand revjolutions per minute.

The common method of bal- \ancing heretoforc'in use has been to rotatethe bowl 0 member and from its irregularmotion det rmine thecircumferentially light zo points; thena ply additional weight, by

solder or the li e, to the inside of the howl at such light points andtest again, until the bowl or member rotates evenly.

The objects of the present invention are I to enable the compensatingweights to be removably applied to the outside of the rotary memberbeing balanced, until its perfect balance is attained, and thenpermanently secured upon the inside of said member; to thus save muchtime and labor,- and reduce the cost of balancing; to rovide means forremovably applying weig its to any circumferential point of the outsideof the rotary member being balanced, and to obtain other advantagesand'results as may be brought out in the following description.

Referring to the accompanying drawings, in which like numerals ofreference indicate corresponding parts in each of the sev- 40 eralfigures, Fi ire 1 shows in side elevation the rotary bow or member of acentrifugal cream separator being balanced by my improved method; Fig. 2is an enlarged view of one of the weights employed in carrying out myinvention; Fig. 3 is a plan of the ring shown at about the middle partof the bowl in Fig. 1, and illustrating one form of construction; Fig. 41s a section of the same on line H of F 1g. 3; Fig. 5 1s a plan (it thering shown at the lower part of the bowl in Fig. '1, said ring being ofthe preferred construction, and Fig. (5 is a cross tion taken, on line6--6 of Fl." 5

In said drawings, and particularly Fig. 1,

5 10 indicates the bowl of a centrifugal cream separator, having thespindle 11 provided with worm 12 adapted to be engaged by worm wheel 13to rapidly rotate the bowl in bearings (not shown) of any suitable andwell-known construction. It will be understood that while 1 haveemployed such a bowl to illustrate my invention, it is only illustrativeof any body or member which is intended to be rotated at high speed, andtherefore must be balanced. There are many centrifugal machines havingsuch bodies or members, and my invention is especially applicable tothem.

In carrying out my improved method of balancing the bowl 10, I secure tothe bowl a member which provides a circumferential series of seats orsockets in a plane substantially at right angles to the axis of rotationof the bowl. More than one of these members can be employed if desired,and in practice I find it advantageous in balancing cream separatorbowls to employ thrce,'one at the top, one at the bottom,'and one halfway between. It will be understood, however, that the use of any onemember embodies the features of my invention. These members may be ofany desired detail construction and secured to the bowl or rotary bodyin any suitable manner, either upon its outside or inside, but forpurposes of illustration l have shown them as rings lit ting aroundthecroam separator bowl 1.0 and adapted to be made fast thereon by setscrews 17 or 27 working radially through the rings. I

The ring 14 which I have shown upon the middle portion of the how], hasat its upper I side an inner shoulder 15 which engages the beveled upperportion 101 of the bowl to hold the ring against dropping downward. Saidring has transverse to its plane a series of holes or sockets l6.

The ring 24 which I have shown at the lower part of the bowl 10 differsin having no inner shoulder, but a uniform cylindrical interior, andobviously such shoulder is notan essential feature of the invention. Thesockets or seats 26 in the ring 24 are furthermore not holes arranged"midway between the inner and outer sides of the ring, but are recessesor grooves in the inner wall of the ring, as clearly shown in Figs. oand (3. This construction of sockets or seats enables 'them to belocated closer to the side of the bowl or other rotary body to bebalanced.

The seats or sockets in the members which are to be secured to therotary body to be balanced are adapted to removably receive a weight orweights, which may be of any desired form oi construction adapted to beretained in said seats or sockets during rotation of the rotary body andat a substantially fixed radial distance from the axis of rotation ofthe said body. These weights are preferably formed of lead or sold er,and for purposes of illustration I have shown them in the drawing asU-shaped and made out of round wire so that the legs 18, 18 of theweight 19 can be inserted in the sockets or seats of the member securedto the rotary body.

In carrying out my improved method of balancing, one of the membersproviding a circumferential series of seats or'sockets is applied to therotary body, and then said body is caused to revolve at a high rate of.

speed. The operator locates the light portion to the-best of his abilityand inserts a weight in the said member at such light point. He thenrevolves the rotary body again, and by changing the position of theweight and substituting larger or smaller wei hts if necessar he uickland'accusecured to the inside of the bowl preferably, and in doing thisproper allowance is made for the difference of radial distance.

1t will be apparent to those having mechanical skill that variousmodifications can be made in the detail construction of my improvedmeansfor balancing, without departing from the spirit and scope of myinvention, and 1 wish to be understood as notlimiting myself by positivedescriptive terms herein employed, except as,tl1e state of the art mayrequire.

Having thus described the invention what I claim is- 1. The combinationwith a rotary body,

and means for rotating said body upon a vertical axis, of a memberremovably secured to said rotary body to rotate therewith and providinga series of sockets concentric with said rotary body, and a weightadapted to be mounted in said sockets at diiierent points of the saidseries.

2. The combination with a rotary body,

and means for rotating said body upon a vertical axis, of a ringremovably secured .to said rotary body to turntherewith and providing acircumferential series of sockets and a weight adapted to be mounted insaid sockets at different points of the circumference of said member. p

3. The combination with a rotary" body and means for rotating said bodyupon a vertical axis, of a ring removably made fast to the outside ofsaid rotary body and hav ing in itself substantially perpendicular toits plane an annular series of seats or sockets concentric with saidrotary body, and a .weight adapted to be removably inserted in saidseats or sockets.

4. A device for balancing rotary bodies, comprising a ring having in itsinner wall a series of transverse grooves, means for holding said ringin place on a rotary body,

and a weight adapted to be removably inserted in said seat-s'or sockets.

The combination with a rotary body having a cylindrical portion,.andmeans for rotating said body: upon a vertical axis, of

a ring removably secured to said rotary body to turn therewith, saidring providing a circumferential series of sockets and having an innershoulder overlying the upper end of said cylindrical portion, and aweight adapted tobe mounted in said sockets atv different points ofmember.

6. The combination with a rotary body, and means for rotating said bodyupon a vertical axis, of a member removably secured the circumference;of said to said rotary body to rotatetherewith and providing a series ofsockets concentric with said rotary body, and a U-shaped weight whosearms are adapted to enter two of said sockets simultaneously atdiiierentpointsof the said series.

In the presence of- RossnLL M. Evnnnrr,

Frances E. Bnonen'r'r.

JOHN roan

